Abstract
I investigated the relationship between the layout of objects placed on a table and organizing the objects. In developing a system for tidying up tables through the cooperation between a robot and a human, it was necessary to identify table-tops that people consider to be untidy. Therefore, experiments were conducted in which participants were asked to evaluate the degree of order seen in images of tables that were presented to them. Participants were also asked to indicate the number of groups into which the objects on the table could be separated. The results indicated that objects organized into fewer groups were rated as tidier than objects organized into a more groups.
